Use ApplicationSearch in Pholio

Summary: Ref T2637. Ref T2625. Convert Pholio to use ApplicationSearch.

Test Plan:
Viewed mocks, changed filters.

Verified edit page works and no longer has a weird side nav on it.

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2625, T2637

Differential Revision: https://secure.phabricator.com/D6530